Seagate ST39216N Barracuda 18XL 9.2GB Ultra SCSI front view Seagate ST39216N Barracuda 18XL 9.2GB Ultra SCSI front view
Seagate ST39216N Barracuda 18XL 9.2GB Ultra SCSI front view Seagate ST39216N Barracuda 18XL 9.2GB Ultra SCSI front view
Seagate ST39216N top view Seagate ST39216N top view
Seagate ST39216N angled view Seagate ST39216N angled view
Seagate ST39216N label view Seagate ST39216N label view
Seagate ST39216N Barracuda 18XL 9.2GB Ultra SCSI front view
Seagate ST39216N Barracuda 18XL 9.2GB Ultra SCSI front view
Seagate ST39216N top view
Seagate ST39216N angled view
Seagate ST39216N label view

Seagate

Seagate ST39216N – 9.2GB | Ultra SCSI 50-Pin | 7200RPM | 3.5" | Legacy HDD

$499.95

Brand New, Factory Sealed | In Stock | Bulk Orders Available

The ST39216N is a 9.2GB Ultra SCSI hard drive featuring 7200RPM, 2MB cache, and 9.5ms average seek time in a 3.5" form factor. Built for mid-to-late 1990s workstations and servers, it is ideal for legacy system restoration, vintage computing applications, and SCSI controller testing. Compatible with Ultra SCSI controllers, SCSI-2 adapters, and 50-pin SCSI systems. This Barracuda 18XL model represents Seagate's professional workstation drive engineering with optimized head actuator assembly for sustained 20MB/s transfer rates.

All products from Anand International ship brand new and factory sealed. Volume and B2B pricing available for qualified buyers.
Specifications
  • Manufacturer: Seagate
  • Model: ST39216N
  • Capacity: 9.2GB
  • Interface: Ultra SCSI 50-Pin
  • Spindle Speed: 7200RPM
  • Cache: 2MB
  • Form Factor: 3.5"
  • Seek Time: 9.5ms average
  • Latency: 4.17ms
  • MTBF: 800,000 hours
  • Drive Type: Internal
  • Warranty: 90 days
  • Shipping: Free domestic US shipping
  • Condition: Brand New, Factory Sealed
Product Features
  • Ultra SCSI 50-pin interface with 20MB/s transfer rate
  • 2MB cache buffer for improved performance
  • Barracuda 18XL series professional workstation drive
  • 9.5ms average seek time for era-appropriate performance
  • Factory sealed new old stock condition
  • Single platter design for reliability
  • Active termination support
  • Compatible with SCSI-2 controllers
  • Direct replacement for legacy systems requiring SCSI connectivity
  • 90-day Anand International warranty on all legacy stock
  • Free domestic US shipping included
  • Volume and B2B pricing available for qualified buyers
Compatibility

Compatible with Ultra SCSI controllers, SCSI-2 adapters, legacy workstations, and 50-pin SCSI systems from the mid-1990s era. Not compatible with modern SATA or IDE controllers without appropriate SCSI adapter cards.
Shipping & Returns
  • Free Shipping: We currently offer free Economy Shipping within the continental U.S. with no minimum order required. Expedited shipping is available at standard carrier rates.
  • Same-Day Shipping: Order placed before 2PM PST will ship the same day. Orders received after this time will ship the following business day.
  • Hassle-Free Returns: If you're not completely satisfied with your purchase, simply return it within 10 days for a hassle-free refund or exchange.

9.2GB Ultra SCSI 7200RPM 2MB Cache Factory Sealed

Why the ST39216N is the right legacy drive

The Barracuda 18XL represents Seagate's premier workstation drive technology from the late 1990s. This model delivers professional-grade 20MB/s Ultra SCSI performance with optimized caching and seek characteristics. As one of the final 50-pin SCSI drives before the transition to 68-pin Wide SCSI, it serves perfectly for period-accurate system builds and legacy hardware maintenance.

Professional Ultra SCSI Performance

Delivers 20MB/s sustained transfer rates through the Ultra SCSI 50-pin interface, representing peak narrow SCSI performance of its era.

Barracuda 18XL Engineering

Features Seagate's advanced head actuator technology and optimized firmware for workstation-class reliability and performance consistency.

Legacy System Compatibility

Perfect fit for mid-1990s workstations, servers, and vintage computing systems requiring authentic period-correct storage solutions.

Professional Cache Architecture

2MB cache buffer provides significant performance improvement over earlier SCSI drives, optimizing both random and sequential access patterns.

New Old Stock with 90-Day Warranty

Available as brand new, factory sealed old stock units from Anand International with a 90-day warranty. Ideal for legacy system maintenance, vintage computing restoration, and hard-to-find replacement needs.

Frequently Asked Questions

Frequently asked questions for SCSI, including information on usage, configuration, and compatibility.

1. What is a SCSI hard drive?

A SCSI (Small Computer System Interface) hard drive is a legacy enterprise storage device that connects using parallel ribbon cables. SCSI was widely used in servers, workstations, and storage arrays before newer technologies like SAS and SATA became standard.
2. What systems are SCSI hard drives compatible with?

SCSI drives are designed for older servers, RAID controllers, and storage arrays that have SCSI interfaces. They are commonly used today to maintain or repair legacy IT infrastructure.
3. What’s the difference between SCSI and SAS?

SCSI uses parallel communication and bulky ribbon cables, with speeds up to 320 MB/s. SAS (Serial Attached SCSI) is the modern successor, offering serial communication, smaller connectors, dual-port redundancy, and speeds up to 24 Gb/s.
4. Can SCSI hard drives still be used in modern systems?

Most modern computers don’t have SCSI ports. To use a SCSI drive, you’ll need a compatible SCSI controller card or an external enclosure designed for parallel SCSI.
5. What capacities are available for SCSI hard drives?

SCSI hard drives were typically available in capacities ranging from a few gigabytes to several hundred gigabytes. Larger capacities are rare compared to modern SATA and SAS drives.
6. Are SCSI hard drives hot-swappable?

Yes, many SCSI drives used in enterprise servers were hot-swappable when paired with a compatible RAID backplane or enclosure. This allowed replacement without shutting down the system.
7. Why are SCSI hard drives still used today?

SCSI hard drives remain important for maintaining legacy servers, specialized equipment, and industrial systems where upgrading to newer storage technologies isn’t possible or practical.